256136525142 has 8 divisors (see below), whose sum is σ = 512273050296. Its totient is φ = 85378841712.

The previous prime is 256136525023. The next prime is 256136525153. The reversal of 256136525142 is 241525631652.

It is a sphenic number, since it is the product of 3 distinct primes.

256136525142 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 256136525094 and 256136525103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21344710423 + ... + 21344710434.

It is an arithmetic number, because the mean of its divisors is an integer number (64034131287).

Almost surely, 2^256136525142 is an apocalyptic number.

256136525142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256136525142 is a wasteful number, since it uses less digits than its factorization.

256136525142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42689420862.

The product of its digits is 432000, while the sum is 42.

The spelling of 256136525142 in words is "two hundred fifty-six billion, one hundred thirty-six million, five hundred twenty-five thousand, one hundred forty-two".